Nozzle core of a nozzle assembly for cleaning heat exchanger tubes



FIG. 1 is a perspective view of a nozzle core of a nozzle assembly for cleaning heat exchanger tubes of the invention;

FIG. 2 is a front elevational view of the invention;

FIG. 3 is a rear elevational view of the invention;

FIG. 4 is a left end elevational view of the invention as shown in FIG. 2;

FIG. 5 is a right end elevational view of the invention as shown in FIG. 2; and,

FIG. 6 is a perspective view of the invention, the broken line showing of a nozzle sleeve is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a nozzle core of a nozzle assembly for cleaning heat exchanger tubes, as shown and described. 